Chair



Oct. 6, 1931.

F. H. ANDERSON CHAIR Filed June 20, 1929 2 Sheets-Sheet 1 F. H. ANDERSO'N 0mm I Filed June 20. 1929 2 Sheets-Sheet 2 Patented Got. 6, 1931 'ETEE STATES FRANK HARTLEY ANDERSON,

or BIRMINGHAM, ALABAMA CHAIR Application filed June 20,

s invention relates chairs, and particularr to a chair having a complemental back and seat, either of which may be adjusted independently of the other and to angles having a great positional range.

it is an object of this invention to provide a novel chair, the back and seat of which are interchangeable so that either section may be used as the back, or either section may be m used as the seat.

it is a further object of the invention to provide novel means for adjustably assembl' g the back and the two sections and for re- 3 them in different positions of adjustit is a still further object to produce a chair of tie character indicated which will compri comparatively few inexpensive parts and be strong and durable.

With the foregoing and other objects in view, the invention consists in the details of construct-ion, and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed.

in describing the invention in detail, reference will be had to the accompanying drawings forming part of this application, wherein like characters denote corresponding parts in the several views, and in which-e Figure 1 illustrates a view in side elevation of a chair embodying the invention;

Figure 2 illustrates a top plan view thereof, partly in section Figure- 3 illustrates a sectional view of one of the frame members;

Figure 4 illustrates a detail. sectional view of parts of the device;

Figure 5 illustrates a fragmentary view of operating parts of the device;

Figure 6 illustrates a sectional view on the line 66 of Figure 1; and

Figure 7 illustrates a detail view of one of the frame members, parts of the device being in section.

In these drawings, 10 denotes the frame members which include the legs or supports, the same being approximately semicircular or segmental, although the inventor does not 1929. Serial 170.372,!40.

wish to be limited with respect to the exact curvature or shape.

It isshown in Figure 3 that these members are formed of sides 11 and 12 and a top plate 13 and a bottom plate 1 1, suitably joined at the corners.

The inner surface of each member 10 is provided with segmental racks or ratchet bars 15. and these are secured to the inner side" plate of each member. I

A section 16, which may be used as the seat or back, and a section 17, which likewise may be used as the seat or back, according to 'the desires of the user, each has a frame structure, such as 18, to which brackets 19 are connected, the bracket of one section extending in parallel relation to the bracket of the other section, and the said brackets having coinciding apertures, such as 20, to receive a shaft or rod 21 on which the brackets are oscillatably mounted. It is shown that the shaft 21 extends through a hub 22 in a frame-like structure 23 that is secured to the under platevl l of the members 10, and the hub member is secured in place by fastenings 24, such as screws or the like. The outer end of the shaft has a'finishing cap 25 screwed thereon, by which the parts are held assembled.

Levers 26'and 27 are provided for each section 16 and 17 and each pair is mounted onza pivot 28 and they diverge from the pivot, as fully shown in Figure 5. The outer endsof the levers have links 29 and 30 connected to them and these links are connected together by a ring or other fastening 31, to

which. an operating cord 32 is connected,

which cord may be pulled for drawing thelevers together through buttons A, as will presently appear.

Each lever has a connection 33 secured to it and this may be in the nature of a wire, rod, or the like, each of which is connected to a plate 34 carrying bolts 35. The said bolts are slidable in members, such as 16, one of which is applied to each of the members 16 and 17 and beyond the said members 16 and 17 these bolts are provided with ratchet teeth 36 which engage the segmental rack for holding the sections 16 or 17 in different positions of adjustment.

The parts just described are, of course, duplicated on the opposite side of the structure and provision is made for their engaging the teeth of the ratchet bar on the opposite frame member 10. Suitable upholstering Will, of course, be applied to the frames 18 and this may include cushions and springs or other features which are usually embodied in chairs of this character.

The bolts 35 have collars 37 on them and these may be adjustable by means of fasten- 7 ings 38, such as set screws, or the like, for

holding springs 39 on the said bolts under proper tension, so that When the bolts are under the influence of the springs, they force the teeth 36 into engagement with the ratchet bars and retain them until they are operated through a pull directed on the member 32 in the direction of the arrow shown in Fig. 5 for the urpose of making a different positional a justment.

The tapestry or other covering of the upholster-y is in two pieces slipped over the tions 16 and 17 on which rests the cushions or mattress, completely covering both frame and cushion. This covering fastens together through the center and is easily removable for washing or other cleaning and consequently is a sanitary feature conducive to health.

I claim:

A chair having curved side supporting members whose ends constitute feet, brackets anchored to the under surfaces of the supporting members, a hub-like elementheld by the brackets of each supporting member, a shaft having its ends anchored in the hubs, an interchangeable back and seat each comprising :1 frame having brackets oscillatively mounted on the shaft, pairs of segmental racks on the inner side of each supporting member, an assembly on each side of the interchangeable back and seat adapted to coact with the segmental racks for holding the interchangeable back and seat in different positions of adjustment, each assembly comprising suitable members mounted for reciprocation transversely of the chair, a device connecting said members, means for exerting force on the last mentioned device for moving it inwardly, means for urging the recipr0cating members transversely of the chair in the opposite direction, and elements on said memthere ada )ted to engage the segmental racks.

FR: NK HARTLEY ANDERSON. 

